FAM. LOCUST1D.E i3 



SUBFAM. PH ASGON U R I N/E 



This is one of the smaller subfamilies of the Locustidae and comprises mostly large species 

 representing in their geographical distribution most of the Old World. Structurally the forms comprising 

 this group are very closely allied to the members of the subfamily Decticinaa, some species, in fact, 

 being about as eligible for membership in that group as in this, the main character separating them, 

 the presence of a free plantula beneath the first segment of the hind tarsi in the Decticinae, being very 

 distinctly developed in some members of the Phasgonurinas. (Plate I . Fig. 9.) 



The distinguishing characters of the group are as follows : 



Antennas inserted between the eyes. Presternum bispinose; pronotum variously developed, 

 sometimes much produced posteriorly over the base of the elytra and sometimes but moderately pro- 

 duced, the lateral carinas sometimes rounded and sometimes acute. Trasi depressed, four jointed, the 

 first and second segments laterally sulcate, the first segment of the hind tarsi furnished beneath with a 

 short free plantula, or without any. Anterior tibiae sulcate laterally, armed above on the outer side, an 

 apical spine being always present; tympani shell-shaped, or linear; posterior tibiae armed beneath with 

 two apical spines on each side and above with one on each side. Organs of flight usually well deve- 

 loped, sometimes abbreviated or abortive, especially in the female; tympanii well developed in the 

 winged males. Ovipositor usually about as long as the hind femora and variable in shape, being gently 

 curved either upwards or downwards, or nearly straight. 



The five genera composing this subfamily are separated as follows : 



TABLE OF GENERA OF SUBFAMILY PHASGONURIN^ 



1 . Fastigium of the vertex scarcely broader than the basal segment of the antenna 2 . 



— Fastigium of the vertex noticably broader than tlie basal segment of the antenna 4. 



2. Elytra and wings fully developed. Occiput horizontal 3. 



— Elytra abbreviated. Occiput declivate 1. Genus Amphiestris, Fieber. 



3. Pronotum deeply sulcate transversely 3. Genus Glyph onotus, Redtenbacher. 



— Pronotum not deeply sulcate transversely 5. Genus Phasgonura, Stephens. £ " 



4. Pronotum with acute persistent lateral carinae .... 4. Genus Onconotus, Fischer von Waldheim. 



— Pronotum 'with the lateral carina rounded, or distinct only 



behind the middle 2. Genus Calliphona, Krauss. 



I. Genus AMPHIESTRIS, Fieber 



Amphiestris. Fieber, Lotos, Vol. 3, p. 187(1853); Kirby, Syn. Cat. Orth. Vol. 2, p. 220(1906). 

 Barbitistes. Rambur, Faune Andal. Vol. 2, p. 53 (i83g). — Not Charpentier (i825). 



Characters. (Translation from Bolivar.) — « Body short and stout. Head large and convex; 

 tubercle of the vertex compressed, narrow, sulcate above; antennae longer than the body. Pronotum 



